You don't have to choose a browser. You can have multiple browsers and use each as needed for its strengths. Sort of sidestepping your question because I don't

You don't have to choose a browser. You can have multiple browsers and use each as needed for its strengths. Sort of sidestepping your question because I don't know either which browser is best from the standpoints you talk about. But I have other advice: One measure that helps a lot with privacy, though it doesn't solve everything, is to use your own private VPN hosted on a service like Digital Ocean. I do this with Firefox. Unfortunately Safari doesn't have a per-app setting for proxies (it's system-wide or nothing with Safari last time I checked), otherwise I would just use Safari. Anyway because I'm using a VPN, my ISP doesn't have a full record of every URL I've ever visited. Digital Ocean would be in a position to have a full record, but at least that's not a business they are actively trying to monetize as far as I can tell, unlike, sadly, my ISP.